package com.yang.spring.core.utils;

public class StringUtils {
    public static boolean isEmpty(String str) {
        return str == null || str.isEmpty();
    }

    public static boolean isNotEmpty(String str) {
        return !isEmpty(str);
    }

    public static boolean isBlank(String str) {
        return str == null;
    }

    public static boolean isNotBlank(String str) {
        return !isBlank(str);
    }
}
